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EC number: 226-430-0 | CAS number: 5398-29-8
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1999-09-13 to 1999-11-05
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP and guideline compliant study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 000
- Report date:
- 2000
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Version / remarks:
- (1992)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.6 (Skin Sensitisation)
- Version / remarks:
- (1996)
- Deviations:
- no
- GLP compliance:
- yes
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- in vivo skin sensitisation study with gunea pig was already available.
Test material
- Reference substance name:
- 3-(amidinothio)propionic acid
- EC Number:
- 226-430-0
- EC Name:
- 3-(amidinothio)propionic acid
- Cas Number:
- 5398-29-8
- Molecular formula:
- C4H8N2O2S
- IUPAC Name:
- 3-(carbamimidoylsulfanyl)propanoic acid
- Details on test material:
- - Substance type: organic
- Physical state: white powder
- Purity: as specified in section 1.1 and 1.2
- Storage condition of test material: at room temperature
Constituent 1
In vivo test system
Test animals
- Species:
- guinea pig
- Strain:
- other: Hsd Poc: DH (SPF)
- Sex:
- female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: Harlan Winkelmann GmbH, Borchen, Germany
- Age at study initiation: young adult
- Weight at study initiation: 341 - 400 g
- Housing: in groups of 5 animals (stainless steel wire mesh cages with plastic-coated grating, floor area: 3000 cm²)
- Diet: ad libitum, standard laboratory diet (Provimi Kliba SA, Kaiseraugst, Switzerland)
- Water: ad libitum, tap water
- Acclimation period: 6 days before the beginning of the study in the laboratory for dermal toxicity
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21 - 25
- Humidity (%): 30 - 70
- Photoperiod (hrs dark / hrs light): 12-12
Study design: in vivo (non-LLNA)
Inductionopen allclose all
- Route:
- intradermal and epicutaneous
- Vehicle:
- other: Tylose CB 30.000 in water
- Concentration / amount:
- Intradermal induction: 5 %
Epicutaneous induction: 25 %
Challenge: 10 %
Challengeopen allclose all
- Route:
- epicutaneous, occlusive
- Vehicle:
- other: Tylose CB 30.000 in water
- Concentration / amount:
- Intradermal induction: 5 %
Epicutaneous induction: 25 %
Challenge: 10 %
- No. of animals per dose:
- 5 per control group; 10 per test group
- Details on study design:
- RANGE FINDING TESTS: Intradermal and epicutaneous range finding study
Two 24-hour epicutaneous occlusive applications within 96 hours were performed. The minimum irritant concentration was found to be a 25 % test substance preparation in 1 % Tylose CB 30.000 in aqua bidest. The maximum non-irritant concentration was found to be a 10 % test substance preparation in 1 % Tylose CB 30.000 in aqua bidest.
Applicability: It was possible to inject a 5 % test substance preparation in 1 % Tylose CB 30.000 in aqua bidest. or in Freund's adjuvant /0.9 % aqueous NaCl-solution (1 : 1) with a syringe. The concentration was well-tolerated locally and systemically.
MAIN STUDY
A. INDUCTION EXPOSURE (INTRADERMAL)
- No. of exposures: 6
- Test groups: 3 different injections were given
A) front row: 2 injections each of 0.1 mL Freund's adjuvant without test substance emulsified with 0.9 % aqueous NaCl-solution in a ratio of 1: 1
B) middle row: 2 injections each of 0.1 mL of a test substance formulation in an appropriate vehicle at the selected concentration
C) back row: 2 injections each of 0.1 mL Freund's adjuvant /0.9 % aqueous NaCl-solution (1: 1) with test substance at the selected concentration.
- Control group: 3 different injections were given
A) front row: 2 injections each of 0.1 mL Freund's adjuvant without test substance emulsified with 0.9 % aqueous NaCl-solution in a ratio of 1: 1
B) middle row: 2 injections each of 0.1 mL of the undiluted vehicle
C) back row: 2 injections each of 0.1 mL of a 50 % formulation of the vehicle without test substance emulsified with Freund's adjuvant* /0.9 % aqueous NaCl-solution (1:1)
- Site: Shoulder
- Frequency of applications: once
- Duration: 7 days
- Concentrations: 5 % of test substance in 1 % Tylose CB 30.000 in aqua bidest.
B. INDUCTION EXPOSURE (EPICUTANEOUS)
- No. of exposures: 1
- Exposure period: 48 hours
- Test groups: 1 mL of test substance formulation on gauze patches under an occlusive dressing
- Control group: treated analogously but with vehicle only
- Site: Shoulder
- Frequency of applications: once
- Duration: 14 days
- Concentrations: 25 %
C. CHALLENGE EXPOSURE
- No. of exposures: 3
- Day(s) of challenge: 14, 21 and 43 days after epicutaneous application
- Exposure period: 24 hours
- Test groups: 0.5 mL of test substance formulation on gauze patches under an occlusive dressing
1st challenge
The test group and control group 1 were treated with the test substance formulation. Additionally, 1 % Tylose in aqua bidest. was applied as a vehicle control. Control group 2 only received 1 % Tylose in aqua bidest.
2nd and 2rd challenge
Treatment of the test group and of control groups 1 and 2 with the test substance formulation. Analogous to the 1st challenge 1 % Tylose CB 30.000 in aqua bidest. was applied as a vehicle control.
- Site: left and right flank
- Concentrations: 10 %
- Evaluation (hr after challenge): 24 and 48 hours after removal of the patch. - Positive control substance(s):
- no
- Remarks:
- A positive control (reliability check) with a known sensitizer is not included in this study. However, a separate study is performed twice a year in the laboratory to demonstrate sensitivity of the test system.
Results and discussion
- Positive control results:
- The positive controls with 2-Mercaptobenzothiazole and Formaldehyde solution (min. 36.5 % for Analysis Reag. ACS, stabilised by ca. 10 % methanol) showed that the test system was able to detect sensitizing compounds under the laboratory conditions chosen.
In vivo (non-LLNA)
Resultsopen allclose all
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 8
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 10 %. No with. + reactions: 8.0. Total no. in groups: 10.0.
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 10 %
- No. with + reactions:
- 0
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: negative control. Dose level: 10 %. No with. + reactions: 0.0. Total no. in groups: 5.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 8
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 10 %. No with. + reactions: 8.0. Total no. in groups: 10.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 10 %
- No. with + reactions:
- 0
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 10 %. No with. + reactions: 0.0. Total no. in groups: 5.0.
- Reading:
- other: 1st rechallenge
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 8
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: other: 1st rechallenge. . Hours after challenge: 24.0. Group: test group. Dose level: 10 %. No with. + reactions: 8.0. Total no. in groups: 10.0.
- Reading:
- other: 1st rechallenge
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 10 %
- No. with + reactions:
- 1
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: other: 1st rechallenge. . Hours after challenge: 24.0. Group: negative control. Dose level: 10 %. No with. + reactions: 1.0. Total no. in groups: 5.0.
- Reading:
- other: 1st rechallenge
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 4
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: other: 1st rechallenge. . Hours after challenge: 48.0. Group: test group. Dose level: 10 %. No with. + reactions: 4.0. Total no. in groups: 10.0.
- Reading:
- other: 1st rechallenge
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 10 %
- No. with + reactions:
- 1
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: other: 1st rechallenge. . Hours after challenge: 48.0. Group: negative control. Dose level: 10 %. No with. + reactions: 1.0. Total no. in groups: 5.0.
- Reading:
- other: 2nd rechallenge
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 6
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: other: 2nd rechallenge. . Hours after challenge: 24.0. Group: test group. Dose level: 10 %. No with. + reactions: 6.0. Total no. in groups: 10.0.
- Reading:
- other: 2nd rechallenge
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 10 %
- No. with + reactions:
- 1
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: other: 2nd rechallenge. . Hours after challenge: 24.0. Group: negative control. Dose level: 10 %. No with. + reactions: 1.0. Total no. in groups: 5.0.
- Reading:
- other: 2nd rechallenge
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 10 %
- No. with + reactions:
- 6
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: other: 2nd rechallenge. . Hours after challenge: 48.0. Group: test group. Dose level: 10 %. No with. + reactions: 6.0. Total no. in groups: 10.0.
- Reading:
- other: 2nd rechallenge
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 10 %
- No. with + reactions:
- 1
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: other: 2nd rechallenge. . Hours after challenge: 48.0. Group: negative control. Dose level: 10 %. No with. + reactions: 1.0. Total no. in groups: 5.0.
Any other information on results incl. tables
Induction
After the intradermal induction intense erythema and swelling were observed at the injection sites of all control group animals and all test group animals at which only Freund's adjuvant / 0.9 % aqueous NaCl-solution (1:1) was applied. After the injection of a 5 % test substance preparation in 1 % Tylose GB 30.000 in aqua bidest. all test group animals exhibited moderate and confluent erythema. Injections of a 5 % test substance preparation in Freund's adjuvant / 0.9% aqueous NaCl-solution (1:1) caused intense erythema and swelling in all test group animals. The control group animals, injected with 1 % Tylose CB 30.000 in aqua bidest. (vehicle) did not show any skin reactions. A 50 % formulation of 1 % Tylose GB 30.000 in aqua bidest. with Freund's adjuvant / 0.9 % aqueous NaCl-solution (1:1) caused intense erythema and swelling in all control group animals. The epicutaneous induction with a 25 % test substance preparation in 1 %Tylose GB 30.000 in aqua bidest. led to incrustation, partially open (caused by the intradermal induction), intense erythema in addition to swelling in all test group animals. The control group animals, which were treated with 1 % Tylose GB 30.000 in aqua bidest. (vehicle) exhibited incrustation, partially open (caused by the intradermal induction) in addition to moderate and confluent erythema with swelling.
Challenge
A 10 % test substance preparation in 1 % Tylose CB 30.000 in aqua bidest. caused the following skin reactions:
Reading at 24 hours after removal of the patches:
- no skin findings in all animals of control group 1
- discrete or patchy erythema in 2 out of 10 test group animals
- moderate and confluent erythema in 1 out of 10 test group animals
- moderate and confluent erythema and swelling in 4 out of 10 test group animals
- intense erythema and swelling in 1 out of 10 test group animals
Reading at 48 hours after removal of the patches:
- no skin findings in all animals of control group 1
- discrete or patchy erythema in 1 out of 10 test group animals
- discrete or patchy erythema and scaling in 1 out of 10 test group animals
- moderate and confluent erythema and scaling in 3 out of 10 test group animals
- moderate and confluent erythema, swelling and scaling in 3 out of 10 test group animals
1 % Tylose CB 30.000, which was applied as a vehicle control to all animals, did not cause any skin reactions.
1st rechallenge
A 10 % test substance preparation in 1 % Tylose CB 30.000 in aqua bidest. the following skin reactions could be observed:
Reading at 24 hours after removal of the patches:
- no skin findings in all animals of control group 2
- discrete or patchy erythema in 1 out of 5 animals of control group 1
- discrete or patchy erythema in 5 out of 10 test group animals
- moderate and confluent erythema and swelling in 3 out of 10 test group animals
Reading at 48 hours after removal of the patches:
- no skin findings in all animals of control group 2
- discrete or patchy erythema in 1 out of 5 animals of control group 1
- discrete or patchy erythema in 3 out of 10 test group animals
- moderate and confluent erythema and scaling in 1 out of 10 test group animals
1 % Tylose CB 30.000, which was applied as a vehicle control to all animals, did not cause any skin reactions.
2nd rechallenge
A 10 % test substance preparation in 1 % Tylose CB 30.000 in aqua bidest. the following skin reactions could be observed:
Reading at 24 hours after removal of the patches:
- no skin findings in all animals of control group 2
- discrete or patchy erythema in 1 out of 5 animals of control group 1
- discrete or patchy erythema in 1 out of 10 test group animals
- moderate and confluent erythema in 4 out of 10 test group animals
- moderate and confluent erythema and swelling in 1 out of 10 test group animals
Reading at 48 hours after removal of the patches:
- no skin findings in all animals of control group 2
- discrete or patchy erythema in 1 out of 5 animals of control group 1
- discrete or patchy erythema in 1 out of 10 test group animals
- moderate and confluent erythema in 2 out of 10 test group animals
- intense erythema and swelling in 3 out of 10 test group animals
1 % Tylose CB 30.000, which was applied as a vehicle control to all animals, did not cause any skin reactions.
Applicant's summary and conclusion
- Interpretation of results:
- sensitising
- Remarks:
- Migrated information
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